WAC 246-215-04115

Multiuse—Copper, use limitation (2009 FDA Food Code 4-101.14).

(1) Except as specified in subsection (2) of this section, copper and copper alloys such as brass may not be used in contact with a food that has a pH below six such as vinegar, fruit juice, or wine or for a fitting or tubing installed between a backflow prevention device and a carbonator.

(2) Copper and copper alloys may be used in contact with beer brewing ingredients that have a pH below six in the prefermentation steps of a beer brewing operation such as a brewpub or microbrewery.